A planar, solid-state amperometric sensor for nitrogen dioxide, employing an ionic liquid electrolyte contained in a polymeric matrix

摘要: Abstract A new type of electrolyte, based on immobilization a hydrophobic ionic liquid, 1-butyl-3-methylimidazolium hexafluorophosphate (BMIPF 6 ) or 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)-imide (EMITFSI) within the structure partially cross-linked poly(ethylene glycol) methyl ether methacrylate (PEGMEMA), was tested for use in planar, solid state amperometric sensors, using nitrogen dioxide as test analyte. Nitrogen contained air reduced gold minigrid indicator electrode at potential −900 mV vs. Pt/air pseudoreference electrode. The effects electrolyte composition, surface area and gas relative humidity sensor response were studied. principal analytical parameters obtained this study compared with those published NO 2 sensors containing other polymeric electrolytes electrodes. There is no substantial difference these parameters, however, present offers longer stability mostly also lower sensitivity to thus usefully widens list available designing solid-state sensors.